Improvement in the manufacture of horseshoes



H. J. BATGHELDER. Manufacture of Horseshoes.

No. 200,425. Patented Feb. 19,1878.

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"IMPROVEMENT IN THl -I MANUFACTURE oF HoRsEsHoEs,

Specification forming part of Letters Patent No. 200,425, datedFebruarylQ, 1878; application filed July 21, 1876.

i To all 'whom it may concern:

Be it known that I, HAZEN J. BATOEEL- DER, of Fitchburg, in the countyof Worcester and State of Massachusetts, have invented a new and usefulImprovement in the Manufacture of Horseshoes; and I do herebydeclarethat the following is a full, clear, and exact descriptionthereof, which will enable others skilled in the art to which itpertains to make and use the same, reference being had to theaccompanying drawing, and to the letters of referencemarked thereon,which form a part of this specification.

In the drawings, Figure 1 denotes a top view, Fig. 2 a bottom view, andFig. 3 a transverse section, of a horseshoe constructed in accordancewith my invention.

My invention'relates to the manufacture of horseshoes of the class inwhich the shoes are entirely through the shoe from one side,

burrs or projections are formed on the side of the shoe opposite to thatfrom which the punch enters, and it becomes necessary to flatten theseburrs, in order to give the footbearing side of the shoe an evensurface. This latter operation tends to partially fill up thenail-holes, so that they have to be subsequently enlarged.

It will be seen, therefore, that shoes in which the nail-holes arepunched have to undergo considerable manipulation before they are incondition to be applied to the hoof. 7

My invention consists in forming the nailholes without condensing themetal or forming burrs or protuberances, by making creases orindentations in the shoe, and drilling the holes from side to side, asdescribed hereinafter. 7

In carrying out my invention I make the shoe A preferably in a machinefrom a rolled blank having the desired form in transverse section. Iprefer to make creases a win the under surface of the shoe, and in thesecreases form countersunk cavities b for the nail-heads. I also prefer tomake similar cavities, c, in the opposite side of the shoe. I then drillholes at from the creases a (commencing at the centers of the cavitiesb, if these are used) entirely through the shoe, these holes being indiameter substantially equal to the thickness (ornarrower portion of thetransverse section) of an ordinary horseshoe-nailnear the head thereof.

I prefer to make all the holes d simultaneously by using a gang ofdrills properly arranged. The shoe is then ready for the market, andwhen taken by the farrier or blacksmith for use, the only operationnecessary to make the nail-holes is to elongate or enlarge the holes clin one direction only-that is, longitudinally of the shoeby a pritchelor other appropriate tool, which converts the round hole made by thedrill into an oblong ,hole corresponding in size and shape to thecrosssection of the nail to be used.

It will be seen that by making the drilled holes (1 of a diameter equalonly to the thickness of the nail to be used enough metal is removed topermit the introduction of the enlarging-tool and the elongation of thehole without increasing its width or displacing the metal laterally, andat the same time the re-. moval of so much metal as would weaken theshoe is avoided.

The cavities c in the upper side of the shoe prevent the slight burrswhich may be formed at the ends of the holes by the pritchel fromprojecting beyond the foot-bearing surface of the shoe, although theburrs so formed are not of sufficient size to be a disadvantage inordinary cases.

The creases a serve, as in other shoes, as

recesses or continuous countersinks for the nail-heads.

It will be apparent that the holes may be enlarged by boring or drillingtwo parallel holes in such close proximity that one will merge into theother, forming an elongated. drilled hole which is squared by thepritchel in the same manner as the round-drilled hole.

By this invention shoes of any thickness, Whether of iron or steel, canbe readily provided with nail-holes of the proper size and shape withoutimpairing the shoe or rendering subsequent hammering or finishingnecessary.

I claim- The described improvement in the method of forming nail-holesin horseshoes, which con--

